1 piece, as in top and bottom together, not either top or bottom.
$1 swimwear. in black or purple. located in the sports section. at the row end closest to the changing rooms.
my daughters swim a lot and the chlorine wears out their bathers after 9 - 12 months. stocked up on 5 years worth.
$1
usually $15.
Maybe let them out of the pool occasionally?